Scientific Intelligence. 423 
am, near Thame, November, 1859. 
SS 
SCIENTIFIC INTELBIGENCE. 
I. CHEMISTRY AND PHYSICS. 
ie 
e 
ae 
4 
x 
: 
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es 
; when however the intensity of 
seen with 
t flame. 
trum of Drummond’s light usually contains the two bright 
red to ignition for a long time; if the lime cylinder remains fixed, the 
bra er and finally vanish, Under these circumstances, a 
